Herbert u



H. N. SEARLES.

I RADIATOR.

APPLICATION FILED MAR- 28,1918.

1,306,976. f v Patented June 17, 1919.

-ployed in connection therewith.

therefore in the form of the lIlVBIltlOIlWlllCh -I shall herein describeand illustrate em,-

' the size and cost thereof.

HERBERT iv. SEARLES, or NEW YORK, N. Y.

RADIATOR.

Specification of Letters Patent. Patented June 1 7, 1919,

' Application filed March 28, 1918. Serial N 0. 225,163.

To (17Zwh0mz'tmag concern Be it known that I, HERBERT N. SEARLEs, acitizen of the United States, and a resident in the borough ofManhattan, city, county, and State of New York, have invented a new anduseful Improvement in Radiators, of which the following is aspecification, reference being had to the accompanying drawings.

While this present invention is not necessarily dependent upon that forwhich I made application for Letters Patent of the United States on thetwenty fourth day of November, 1917, Serial No. 203,659, because itsfeatures may be embodied in many other forms of radiator, it maybeneficiallyIbe1 emlave bodied certain of the elements disclosed in saidformer application.

It is the purpose of this invention to increase the efficiency ofradiators and reduce I Generally stated, the improvements relate tomeans whereby the circulation of the cooling fluid and of the air withinand through the radiator, is accelerated and maintained; alsoto meansfor reducingthe-cost of the pump system to compel circulation of thecooling liquid;

also to means'to'prevent clogging or sealing of the radiator byaccumulations of air, water or foreign matter.

Referring to the drawings, Figure 1 is a vertical sectional view takenon the line 11 of Fig. 2, looking toward the right; Fig. 2 is anedgewise' elevation of the radiator, the central or pump section bemgbroken away to show the interior construction.

In the drawings 2 represents a small tank or reservoir, usually but notnecessarily present. 3 represents a pipe connection between thereservoir and the radiator. In the present instance the radiator iscomposed of five sections 4, 5, 6, 7 and 8, each comprising six waterbearing tubes 9. Ateachend of the radiator are a series of what I callcirculating chambers because in them the water in its circulation is inthe first instance received from the motor, transferred from one sectionof tubes to the other and finally discharged from the radiator. Two ofthese chambers, 10 and 11, are what I call single chambers, one at theincoming and the other at the outgoing end, and four face.

of them, 12, 13, 14 and 15, are what I call double chambers. Theseseveral chambers are se arated from each other by water tightpartitlons- 16. The water tubes 9 are made of very thin metal and flatin form so that their opposed Walls are separated by as small a distance(in the instance shown approximately one sixteenth of an inch) aspracticable in order that the sheet of water flowing through them may becooled as quickly as possible.

17 is a pump casing located in the center of the radiator. 18 is theupper surface of the pump cylinder and 19 the lower sur- I The pump isof the rotary type and is mounted upon the fan shaft 20 and is composedof two elements 21 and 21, both of them fast upon the shaft. 21 isaspiral part of the pump. It is located opposite the water passages 22 inthe upper part 18 of the pump cylinder and to the right of the spiralportion of the pump are paddles or blades 23 located opposite the waterpassages 24 in the lower part 19 of the pump cylinder. These passagesareequal in munber to, and preferably slightly larger in size than, theopenings 22. a

25, 25, are fans. one on eithe side of the radiator and both fast on theshaft 20. which extends through the radiator, and is supported insuitable bearings, preferably provided. with stuffing boxes, lubricatingpacking, etc., as shown. The blades of these fans are set at such anglesrespectively that one of them acts as a blower discharging its blastupon and through the radiator and the other acts as a suction fan. whichreceives the air driven by the opposite fan and sucks or pulls itthrough the radiator. Thus the fans co-actively operating effect astrong current of air through the radiator at all times. 26 is a beltpulley or equivalent device, whereby the fan shaft carrying the fansandthe rotary pump with it is rotated at such speed as desired. 27, and28, are vent cocks for the purpose of blowing ofi the water carryingchambers or passages of the radiator, being useful at times to relievefrom airbubbles or to clear the radiator of dirt or other'objectionabledeposits.

The operation is as follows:

The ends respectively of the tubes 9 open into the circulating chambersin such manner that as illustrated by the arrows, the heated watercoming from the motor, or

from the reservoir 2, as the case may be, enters the single chamber 10,passes downwardly through the tubes 9 to the double chamber 14, forwhich there are six incoming and six outgoing tubes, and through thatchamber and upwardly into the double chamber 12, in which there takesplace the same flow of water, and from which the water passes downwardlyto the pump casing 17. It is drawn into the pump through the openings 22in the upper part 18 of the cylinder and thrust to the right by thespiral portion 21 of the pump (see Fig. 2) where under the influence ofthe blades 23 it is ejected from the pump cylinder through the openings24 in the lower part 19 thereof into the downwardly extending tubes 9and from them into the double chamber 15, from which it passes upwardlyinto the double chamber 13, from which it is discharged through thedownwardly extending tubes 9 into the single chamber 11, from which itpasses through the pipe 29 back again to the jacket of the motor.

It will be noted that a series of advantages are secured by thisconstruction; that is to say, the employment of two fans, one to pushand the other to pull the air through the radiator, avoids one of thespecially objectionable features of motor radiators as now constructed,because their conjoint action is such that continuous and abundant flowof cool air through the radiator is maintained at all timesirrespectiveof whether the vehicle be moving against or away from the wind, or at anangle relative thereto; again, all deposits of dirt, dust and the likewithin the radiator due to the sluggish circulation of air therethroughwhich tend to reduce the cooling action of the air blast are avoidedbecause the air currents are so violent that by no possibility can anysuch deposits remain upon the radiator. Also the location of the pump inthe center of the radiator and driven at the speed of the fans enablesme to use a much smaller pump than heretofore and likewise saves thespace heretofore necessary for such pump, and its driving mechanism;furthermore, my construction is less expensive than pumps as heretoforeconstructed together with their driving mechanism because all I requireis a few simple and inexpensive parts mounted upon the fan shaft which,owing to their construction,-are practically indestructible and do notrequire any repair or attention. The peculiar construction and method of0peration of my new pump secures increased efiiciency when employed incombination with the two fans because all these elements are fast on thesame shaft, hence they are all driven at the same speed; and both thefans and the pump embody the suction and delivery features, sometimescalled the push and pull action, from which results the most efficientco-active operation between these parts. The pump compels thecirculation of the cooling agent with unusual rapidity and the duplexair fans efiect the circulation of the air in unusual volume and speedto coincide with the increased flow of the liquid, thus securing, as Ibelieve, better cooling thereof than has ever before been attained.Furthermore, since the pump is located in what may be called thecenterof the water circulation without the skin friction due toadditional piping, etc., the circulation is morefree and of largervolume than in apparatus as heretofore constructed; and lastly, thevents 27 and 28 afi'ord means whereby the interior of the radiatorchambers andtubes may be kept clean, just as the violence of the airblasts keeps all its exterior surface clean.

It will be obvious to those whoare familiar with such matters thatmodifications may be made in the details of construction and yet theessentials of the invention be utilized. I therefore do not limit myselfto the details described and shown.

I claim:

1. A radiator having a series of connecting circulatory chambers, a fanshaft located at about its medial part which projects through theradiator, a fan fast on the shaft on one side of the radiator adapted toact a blower, another fan fast on the shaft on the other side of theradiator adapted to act as a suction fan, a pump embodying a fixedcylindrical casing, a spiral suction section and a bladed dischargesection, both of which sections are fast on the fan shaft, an intakewater passage adapted to convey water to the pump, a discharge waterpassage adapted to convey water from the pump',"" and means to rotatethe shaft.

2. A radiator having a series of connecting circulatory chambers, a fanshaft located at or near its medial part which projects through theradiator, a fan fast on the shaft on one side of the radiator adapted toact as a blower, another fan fast on the shaft on the other side of theradiator adapted to act as a suction fan, a pump for water circulationembodying a fixed cylindrical casing having intake and discharge waterpassages at opposite ends, the discharge having greater area than theintake, at spirally arranged part opposite the intake and propellingblades opposite the discharge, both fast on the fan shaft, and means torotate the shaft. 7

In testimony whereof I have signed my name to this specification. 4

HERBERT N. SEARLES.

